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Radiant Cut Diamond Size Chart (MM)

The ideal ratio for a Radiant cut diamond produces a slightly rectangular shape. The chart below gives you the weight and millimeter size conversions for the ideal radiant cut diamond.

Radiant Size Chart

Radiant Diamond Sizes

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Radiant MM Size	Radiant Carat Weight
5x3 mm.	0.31 ct.
4.5x3.5 mm.	0.34 ct.
6x3 mm.	0.41 ct.
6x4 mm.	0.50 ct.
6.5x4.5 mm.	0.75 ct.
7x5 mm.	1.00 ct.
7.3x5.5 mm.	1.25 ct.
7.5x5.8 mm.	1.50 ct.
8x6 mm.	2.00 ct.
8.5x6.5 mm.	2.25 ct.
9x7 mm.	2.50 ct.
9.5x7.5 mm.	3.00 ct.
10x7 mm.	3.31 ct.

Radiant MM Size	Radiant Carat Weight
10x8 mm.	3.50 ct.
11x9 mm.	5.05 ct.
12x9 mm.	6.06 ct.
11.5x10 mm.	6.45 ct.
13x9 mm.	6.54 ct.
12x10 mm.	6.79 ct.
14x10 mm.	8.47 ct.
13x11 mm.	9.33 ct.
13.5x11.5 mm.	10.19 ct.
15x11 mm.	11.48 ct.
14x12 mm.	12.14 ct.
16x12 mm.	14.22 ct.